(PECL cairo >= 0.1.0)
CairoImageSurface::getHeight — Retrieves the height of the CairoImageSurface
This methods returns the CairoImageSurface height.
此函数没有参数。
CairoImageSurface object height
Example #1 CairoImageSurface::getHeight() example
<?php
// creates a new image surface
$surface = new CairoImageSurface(CairoFormat::ARGB32, 80, 50);
//gets the height
var_dump($surface->getHeight());
?>
以上例程的输出类似于：
int(50)